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首页> 外文会议>14th cryogenics 2017 >EXPERIMENTAL STUDY ON THERMAL STRESS OF CRYOGENIC TANK DURING DIFFERENT COOL DOWN PROCESS
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EXPERIMENTAL STUDY ON THERMAL STRESS OF CRYOGENIC TANK DURING DIFFERENT COOL DOWN PROCESS

机译：不同冷却过程中低温储罐热应力的实验研究

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摘要

An experimental study is performed to investigate the transient thermal stress distribution of an aluminiumrnalloy tank during cryogenic fluid filling processes. Three different filling procedures are adopted with liquidrnnitrogen being fed into the tank from the top axial nozzle, the bottom axial nozzle, and the top lateralrnsprayer, respectively. The transient temperatures and thermal strains are measured, and the local thermalrnstresses are calculated. The results indicate that fluid filling from top axial nozzle leads to the most uniformrntemperature distribution and the lowest transient thermal stress in the tank wall. Filling from bottom axialrnnozzle produces similar but much steeper cooling curves and higher transient thermal stresses. However,rnfilling from top lateral sprayer generates a quite different temperature distribution and meanwhile, thernhighest level of thermal stress. Moreover, the cooling curves become more uneven as the feeding raternincreases, resulting in higher transient thermal stresses.
机译：进行实验研究以研究低温流体填充过程中铝合金罐的瞬态热应力分布。采用三种不同的填充程序，分别从顶部轴向喷嘴，底部轴向喷嘴和顶部横向喷雾器向罐中注入液氮。测量了瞬态温度和热应变，并计算了局部热应力。结果表明，从顶部轴向喷嘴注入的流体导致罐壁中最均匀的温度分布和最小的瞬态热应力。从底部轴向喷嘴填充会产生类似但更陡峭的冷却曲线和更高的瞬态热应力。但是，从顶部横向喷雾器进行灌装会产生完全不同的温度分布，同时会产生最高水平的热应力。此外，随着进料速度的增加，冷却曲线变得更加不均匀，从而导致更高的瞬态热应力。

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    《14th cryogenics 2017》|2017年|275-281|共7页
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    Zhu Kang; Ma Yuan; Li Cui; Li Yanzhong;

  • 作者单位

    Institute of Refrigerating and Cryogenic Engineering, School of Energy and Power Engineering,Xi’an Jiaotong University Xi’an, 710049, China;

    Institute of Refrigerating and Cryogenic Engineering, School of Energy and Power Engineering,Xi’an Jiaotong University Xi’an, 710049, China;

    Institute of Refrigerating and Cryogenic Engineering, School of Energy and Power Engineering,Xi’an Jiaotong University Xi’an, 710049, China;

    Institute of Refrigerating and Cryogenic Engineering, School of Energy and Power Engineering,Xi’an Jiaotong University Xi’an, 710049, China,State Key Laboratory of Technologies in Space Cryogenic Propellants Beijing, 100028, China, yzli-epe@mail.xjtu.edu.cn;

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